While everyone else around him, including Theresa May, bowed to the Queen as they entered the House of Lords, the Labour leader remained upright.

The politician’s team have since said that he was observing the correct protocol and no one else was but he was clearly the odd one out.

According to leading etiquette authority Debrett’s, It is customary for all members of the House of Commons to bow to The Queen at the Bar of the House of Lords before she makes her speech at the State Opening of Parliament.

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Both the prime minister and John Bercow were among those to do so but others including Tim Farron and Boris Johnson don’t.

Some are alleging that the correct protocol is that it is only the Speaker and Black Rod who bow for the whole House but Debrett’s disagrees.

During a Sky News debate before the election, Corbyn rejected suggestions he would abolish the monarchy.

He added: ‘I believe in a democracy and we live in a democracy. We have a titular head of state as the monarch but without political power.’